这是我在添加 "simple_permissions "包时看到的错误。我如何解决这个问题?我最近升级了flutter,在升级之前它曾经工作得很好。rootflutter.pub-cachehostedpub.dartlang.orgsimple_permissions-0.1.9androidsrcmainjavacomethrassimplepermissionsSimplePermissionsPlugin.java:9: error: cannot find symbolimport android.support.v4.app.ActivityCompat;
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:9: error: cannot find symbol
import android.support.v4.app.ActivityCompat;
symbol: class ActivityCompat
location: package android.support.v4.app
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:10: error: package android.support.v4.content does not exist
import android.support.v4.content.ContextCompat;
^
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:156: error: cannot find symbol
ActivityCompat.requestPermissions(activity, perm, 0);
^
symbol: variable ActivityCompat
location: class SimplePermissionsPlugin
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:163: error: cannot find symbol
return PackageManager.PERMISSION_GRANTED == ContextCompat.checkSelfPermission(activity, permission);
symbol: variable ContextCompat
location: class SimplePermissionsPlugin
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:171: error: cannot find symbol
if (ActivityCompat.shouldShowRequestPermissionRationale(registrar.activity(), permission)) {
^
symbol: variable ActivityCompat
location: class SimplePermissionsPlugin
/root/flutter/.pub-cache/hosted/pub.dartlang.org/simple_permissions-0.1.9/android/src/main/java/com/ethras/simplepermissions/SimplePermissionsPlugin.java:175: error: cannot find symbol
if (ActivityCompat.checkSelfPermission(registrar.context(), permission) == PackageManager.PERMISSION_GRANTED) {
^
symbol: variable ActivityCompat
location: class SimplePermissionsPlugin
6 errors
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':simple_permissions:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 3s
The built failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetfier to solve the incompatibility.
[!] Flutter tried to create the file `android/settings_aar.gradle`, but failed.
To manually update `settings.gradle`, follow these steps:
1. Copy `settings.gradle` as `settings_aar.gradle`
2. Remove the following code from `settings_aar.gradle`:
def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
def properties = new Properties()
assert localPropertiesFile.exists()
localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
def flutterSdkPath = properties.getProperty("flutter.sdk")
assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
Exception: Please create the file and run this command again.
Exited (sigterm)
我建议你在使用之前先检查一下这个包。
看来 simple_permissions
已经过时了,而且这个包从2018年开始就没有更新过,它的仓库也从github上消失了,可以考虑使用其他包,如 permission_handler
.
干杯。